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Tony has 7. Katie has 4 more than Tony. How many does she have?

2/12/2016

 

Can it roll? Can it stack? Does it have points? Does it have flat sides?

2/12/2016

 
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Subtraction Word Problems ...

2/8/2016

 
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Exploring Attributes of 3D Solids ...

2/8/2016

 
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Can you guess Mrs. Anderson's sorting rule?
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Arwa correctly guesses "these stack and these don't stack".
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Tasha figures out "has no points and has points".
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Toby says "these stack and these don't stack".

2D and 3D Geometry

2/8/2016

 
In our new unit, your child will be learning about geometry.
The Learning Goals for this unit are to:
-explore 3D solids, such as cubes (boxes), cylinders (paper towel rolls), and spheres (balls)
-describe 3D solids (for example, some solids can roll, some have points, some are curved, and some can stack)
-make a picture using 2D figures, such as triangles and rectangles
-use language, such as on, in, under, and over to describe where objects are placed
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Subitizing ...

2/2/2016

 
Subitizing is the ability to rapidly determine the quantity of a small group of objects without counting. Subitizing is a fundamental skill in a student’s development of number understanding. There are two types of subitizing; perceptual and conceptual.
Perceptual subitizing is the ability to recognize the quantity of a set without counting. It is the basis for counting and cardinality.
Conceptual subitizing is seeing number patterns within a set (part—whole) and then determining the quantity by putting the number patterns together . For example, when shown a domino with a pattern of 8 dots/pips the observer may break the 8 dots into two groups of 4

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Conceptual subitizing is the basis of number and operation sense. Dot representations can be regular and irregular. Regular representation show the dots as you would find them on a die or domino. Irregular representations group the dots in a variety of ways.
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Here is a link to play a counting game involving subitization.

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